There was an excellent documentary on it in France from cash investigations.
Not only it kills more pedestrians, but also when you get an accident with one of the people driving these monstrosity, you get a lot more chance of dying.
So if either you want to be safe, you got to buy an even heavier car.
This is a race to the bottom.
Hopefully with the rise of gas price, people will start to rethink buying SUV.